93 IDI Injectors - Ford Powerstroke Diesel Forum
7.3L IDI (Non-Powerstroke) Diesels Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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Old 10-21-2010, 08:52 AM
Compression Ignition Addict
 

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93 IDI Injectors

Okay so a guy brought up a 1993 IDI to the shop today and he thinks the injectors are bad along with the Orings. Well it has a really bad knock coming from it witch sound like its coming from the injector itself. It also pours alot of white smoke and has a really really rough idle to the point i dont think its going to stay running.

He said it doesnt go through alot of oil or coolant...

What do you guys think before i start throwin parts at it? Injectors?

Note...i dont work on the IDI much so im kinda about them.

Thanks guys
Steve
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Old 10-21-2010, 09:02 AM
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With the knocking sound....dont figure it to be injectors...I could be wrong though. Worked on one a cple months ago... same symptoms, he lost 2 lifters.....
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Old 10-22-2010, 07:04 AM
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I would rule out injectors first. With truck idling loosen each injector line. If it idles worse, that injector is good. If you loosen a line and the idle doesn't change, there you go. A stuck open injector will cause his symptoms.

I would lean more towards injector over valvetrain.
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